CVE-2025-14322

Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component

CVSS 8 HIGHEPSS 0.3%CWE-754

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

09 Dec 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 146, Firefox ESR 115.31, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N

Affected products

Mozilla · Firefox Mozilla · Thunderbird

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References

https://bugzilla.mozilla.org/show_bug.cgi?id=1996473 https://www.mozilla.org/security/advisories/mfsa2025-92/https://www.mozilla.org/security/advisories/mfsa2025-93/https://www.mozilla.org/security/advisories/mfsa2025-94/https://www.mozilla.org/security/advisories/mfsa2025-95/https://www.mozilla.org/security/advisories/mfsa2025-96/